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Cricothyroid muscle dysfunction impairs vocal fold vibration in unilateral vocal fold paralysis.
Laryngoscope. 2014 Jan; 124(1):201-6.L

Abstract

OBJECTIVES/HYPOTHESIS

The relevance of the cricothyroid (CT) muscle in patients with unilateral vocal fold paralysis (UVFP) remains controversial. To clarify the functional significance of the CT muscle in patients with UVFP, the confounding effect of the severity of recurrent laryngeal nerve injury should be taken into consideration. In the present study, quantitative laryngeal electromyography (LEMG) was used to measure the severity of paralysis of the thyroarytenoid-lateral cricoarytenoid (TA-LCA) muscle complex to allow the functional contribution of the CT muscle to be determined.

STUDY DESIGN

Cross-sectional study performed in an otolaryngology outpatient clinic.

METHODS

Thirty-one patients with a main diagnosis of UVFP were recruited. The main outcome measures included LEMG examination, quantitative LEMG analysis of the TA-LCA muscle complex, UVFP-related quality-of-life questionnaire (Voice Outcome Survey [VOS]), voice acoustics analysis, videolaryngostroboscopy, and general quality-of-life questionnaire (Short Form-36 Health Survey [SF-36]) assessments.

RESULTS

The vocal cord position did not differ between patients with and without CT muscle impairment. Patients with both TA-LCA and CT paralysis showed poorer vocal fold vibration (P = .048) and higher fundamental frequency (P = .02), and the VOS and SF-36 were both poorer compared with patients with only TA-LCA paralysis.

CONCLUSIONS

Although the vocal cord position was not influenced by CT muscle function, coexisting CT muscle paralysis may damage the voice by impairing vocal fold vibration in UVFP patients.

Authors+Show Affiliations

Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C.; School of Medicine, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23712513

Citation

Pei, Yu-Cheng, et al. "Cricothyroid Muscle Dysfunction Impairs Vocal Fold Vibration in Unilateral Vocal Fold Paralysis." The Laryngoscope, vol. 124, no. 1, 2014, pp. 201-6.
Pei YC, Fang TJ, Li HY, et al. Cricothyroid muscle dysfunction impairs vocal fold vibration in unilateral vocal fold paralysis. Laryngoscope. 2014;124(1):201-6.
Pei, Y. C., Fang, T. J., Li, H. Y., & Wong, A. M. (2014). Cricothyroid muscle dysfunction impairs vocal fold vibration in unilateral vocal fold paralysis. The Laryngoscope, 124(1), 201-6. https://doi.org/10.1002/lary.24229
Pei YC, et al. Cricothyroid Muscle Dysfunction Impairs Vocal Fold Vibration in Unilateral Vocal Fold Paralysis. Laryngoscope. 2014;124(1):201-6. PubMed PMID: 23712513.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cricothyroid muscle dysfunction impairs vocal fold vibration in unilateral vocal fold paralysis. AU - Pei,Yu-Cheng, AU - Fang,Tuan-Jen, AU - Li,Hsueh-Yu, AU - Wong,Alice M K, Y1 - 2013/06/28/ PY - 2013/01/02/received PY - 2013/04/08/revised PY - 2013/05/09/accepted PY - 2013/5/29/entrez PY - 2013/5/29/pubmed PY - 2014/3/13/medline KW - Laryngeal electromyography KW - quality of life KW - superior laryngeal nerve KW - unilateral vocal fold paralysis KW - voice SP - 201 EP - 6 JF - The Laryngoscope JO - Laryngoscope VL - 124 IS - 1 N2 - OBJECTIVES/HYPOTHESIS: The relevance of the cricothyroid (CT) muscle in patients with unilateral vocal fold paralysis (UVFP) remains controversial. To clarify the functional significance of the CT muscle in patients with UVFP, the confounding effect of the severity of recurrent laryngeal nerve injury should be taken into consideration. In the present study, quantitative laryngeal electromyography (LEMG) was used to measure the severity of paralysis of the thyroarytenoid-lateral cricoarytenoid (TA-LCA) muscle complex to allow the functional contribution of the CT muscle to be determined. STUDY DESIGN: Cross-sectional study performed in an otolaryngology outpatient clinic. METHODS: Thirty-one patients with a main diagnosis of UVFP were recruited. The main outcome measures included LEMG examination, quantitative LEMG analysis of the TA-LCA muscle complex, UVFP-related quality-of-life questionnaire (Voice Outcome Survey [VOS]), voice acoustics analysis, videolaryngostroboscopy, and general quality-of-life questionnaire (Short Form-36 Health Survey [SF-36]) assessments. RESULTS: The vocal cord position did not differ between patients with and without CT muscle impairment. Patients with both TA-LCA and CT paralysis showed poorer vocal fold vibration (P = .048) and higher fundamental frequency (P = .02), and the VOS and SF-36 were both poorer compared with patients with only TA-LCA paralysis. CONCLUSIONS: Although the vocal cord position was not influenced by CT muscle function, coexisting CT muscle paralysis may damage the voice by impairing vocal fold vibration in UVFP patients. SN - 1531-4995 UR - https://www.unboundmedicine.com/medline/citation/23712513/Cricothyroid_muscle_dysfunction_impairs_vocal_fold_vibration_in_unilateral_vocal_fold_paralysis_ L2 - https://doi.org/10.1002/lary.24229 DB - PRIME DP - Unbound Medicine ER -